%0 Journal Article
%A Wu, Shan
%A Phelan, W. A.
%A Liu, L.
%A Morey, J. R.
%A Tutmaher, J. A.
%A Neuefeind, J. C.
%A Huq, Ashfia
%A Stone, Matthew B.
%A Feygenson, M.
%A Tam, David W.
%A Frandsen, Benjamin A.
%A Trump, Benjamin
%A Wan, Cheng
%A Dunsiger, S. R.
%A McQueen, T. M.
%A Uemura, Y. J.
%A Broholm, C. L.
%T Incommensurate Magnetism Near Quantum Criticality in CeNiAsO
%J Physical review letters
%V 122
%N 19
%@ 1079-7114
%C College Park, Md.
%I APS
%M FZJ-2019-05722
%P 197203
%D 2019
%X We report the discovery of incommensurate magnetism near quantum criticality in CeNiAsO through neutron scattering and zero field muon spin rotation. For T<TN1=8.7(3)  K, a second order phase transition yields an incommensurate spin density with a wave vector k=(0.44(4),0,0). For T<TN2=7.6(3)  K, we find coplanar commensurate order with a moment of 0.37(5)μB, reduced to 30% of the saturation moment of the |±12⟩ Kramers doublet ground state, which we establish through inelastic neutron scattering. Muon spin rotation in CeNiAs1−xPxO shows the commensurate order only exists for x≤0.1 so we infer the transition at xc=0.4(1) is between an incommensurate longitudinal spin density wave and a paramagnetic Fermi liquid.
%F PUB:(DE-HGF)16
%9 Journal Article
%$ 31144966
%U <Go to ISI:>//WOS:000468228600011
%R 10.1103/PhysRevLett.122.197203
%U https://juser.fz-juelich.de/record/866643